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AIM NC259 No Clean Solder Paste – A high-performance, optimized for no/low-silver alloys.

  • Item Number: NC259
  • Manufacturer: AIM
  • Lead Type: Lead-Free
  • Alloys: Compatible with SN100C® and no/low-silver alloys
  • Type: No Clean
  • Shelf Life: Contact Techniq VN for details.

1. Product Overview

AIM’s NC259 is a no-clean solder paste designed for use with no/low-silver alloys while maintaining the performance of high-silver SAC alloys. It features high transfer efficiency, precise print definition, and pause-to-print capabilities exceeding 8 hours. The NC259 activator system enables excellent wetting even without silver and withstands peak reflow temperatures up to 260°C. When combined with SN100C®, it produces bright, smooth solder joints with minimal voiding in BGA and BTC packages.

2. Applications

  • Suitable for PCB assembly using no/low-silver alloys
  • Ideal for fine-feature printing and high-speed printing (up to 150mm/sec)
  • Reduces defects such as voiding and head-in-pillow
  • Leaves minimal residue post-reflow, eliminating the need for cleaning

3. Typical Properties – Specifications

Parameter Test Method Results
Flux Classification J-STD-004 / J-STD-004B ROL0 / ROL1
Refrigerated Shelf Life 9 months (0°C-12°C)
Copper Mirror Test IPC-TM-650 2.3.32 Low
Corrosion Test IPC-TM-650 2.6.15 Pass
Quantitative Halides IPC-TM-650 2.3.28.1 Pass
Surface Insulation Resistance (SIR) IPC-TM-650 2.6.3.7 Pass
Electrochemical Migration IPC-TM-650 2.6.14.1 Pass
Flux Solids (Non-Volatile) IPC-TM-650 2.3.34 95.6%
Acid Value IPC-TM-650 2.3.13 150 ± 4 mg KOH/g flux
Specific Gravity ASTM D-1298 3.70
Viscosity IPC-TM-650 2.4.34 500 – 1000 Kcps
Visual Appearance J-STD-004B 3.4.2.5 Gray, Smooth, Creamy
Slump Test IPC-TM-650 2.4.35 Pass
Solder Ball Test IPC-TM-650 2.4.43 Pass
Tack Test IPC-TM-650 2.4.44 48g
Wetting Test IPC-TM-650 2.4.45 Pass

BERGQUIST microTIM mTIM 1028 Thermal Interface Coating High performance thermal management solution for nickel finished heat sinks, optical transceivers, and data center liquid cooling systems

BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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